CVE-2026-28819
Out-of-Bounds Write in Apple iOS and macOS
Publication date: 2026-05-11
Last updated on: 2026-05-11
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | ios | 18.7.9 |
| apple | ipados | 18.7.9 |
| apple | macos_sequoia | 15.7.7 |
| apple | macos_sonoma | 14.8.7 |
| apple | macos_tahoe | 26.5 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an out-of-bounds write issue that was addressed by improving bounds checking in affected Apple operating systems. An out-of-bounds write occurs when a program writes data outside the boundaries of allocated memory, which can lead to unexpected behavior or security issues.
In this case, the vulnerability could allow an application to execute arbitrary code with kernel privileges, meaning the app could potentially gain the highest level of control over the system.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow a malicious app to run arbitrary code with kernel-level privileges on affected Apple devices. This means an attacker could potentially take full control of the device, bypass security mechanisms, access sensitive data, or install persistent malware.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Apple devices to the fixed versions: iOS 18.7.9, iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, or macOS Tahoe 26.5.